Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
11,933 results · page 18 of 239
Oct 13, 2026Relative path traversal in Windows Shell allows an authorized attacker to elevate privileges locally.CVE-2026-83873 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Relative path traversal in Windows Shell allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Incorrect conversion between numeric types in Windows TCP/IP allows an authorized attacker to elevate privileges locally.CVE-2026-83872 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Incorrect conversion between numeric types in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.CVE-2026-83871 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Heap-based buffer overflow in OpenSSH for Windows allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds read in Windows Aggregated Data Platform Service allows an authorized attacker to disclose information locally.CVE-2026-83870 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.5
Out-of-bounds read in Windows Aggregated Data Platform Service allows an authorized attacker to disclose information locally.
- Product
- Windows 11 Version 24H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Integer underflow (wrap or wraparound) in DNS Server allows an unauthorized attacker to execute code over a network.CVE-2026-83869 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comCritical 9.8
Integer underflow (wrap or wraparound) in DNS Server allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Bluetooth Driver allows an authorized attacker to elevaCVE-2026-83868 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Concurrent execution using shared resource with improper synchronization ('race condition') in Microsoft Bluetooth Driver allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows Push Notifications allows an authorized attacker to elevate privileges locally.CVE-2026-83867 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Windows Push Notifications allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.CVE-2026-83866 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Use after free in Windows Win32K allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Relative path traversal in Windows Internet (wininet.dll) allows an authorized attacker to perform tampering locally.CVE-2026-83865 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 4.7
Relative path traversal in Windows Internet (wininet.dll) allows an authorized attacker to perform tampering locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper access control in Windows NTFS allows an authorized attacker to disclose information locally.CVE-2026-83864 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.5
Improper access control in Windows NTFS allows an authorized attacker to disclose information locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.CVE-2026-83863 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Servicing Stack Updates allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Network Load Balancing allows an unauthorized attacker to execute code over an adjacent network.CVE-2026-83862 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Use after free in Windows Network Load Balancing allows an unauthorized attacker to execute code over an adjacent network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows Remote Desktop Protocol allows an authorized attacker to elevate privileges locally.CVE-2026-83861 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Windows Remote Desktop Protocol allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Stack-based buffer overflow in Windows GDI allows an unauthorized attacker to deny service over a network.CVE-2026-83860 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Stack-based buffer overflow in Windows GDI allows an unauthorized attacker to deny service over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows NTFS allows an authorized attacker to elevate privileges locally.CVE-2026-83859 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Use after free in Windows NTFS allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.CVE-2026-83857 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Use after free in Windows Universal Disk Format File System Driver (UDFS) allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds read in Windows Event Logging Service allows an unauthorized attacker to execute code over a network.CVE-2026-83856 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Out-of-bounds read in Windows Event Logging Service allows an unauthorized attacker to execute code over a network.
- Product
- Windows 11 version 23H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Integer underflow (wrap or wraparound) in Windows WLAN Service allows an unauthorized attacker to deny service over a network.CVE-2026-83855 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Integer underflow (wrap or wraparound) in Windows WLAN Service allows an unauthorized attacker to deny service over a network.
- Product
- Windows 11 version 23H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper access control in Windows Notification allows an authorized attacker to disclose information locally.CVE-2026-83854 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.5
Improper access control in Windows Notification allows an authorized attacker to disclose information locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Hello allows an authorized attacker to elevate privileges locally.CVE-2026-83853 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Use after free in Windows Hello allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 21H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally.CVE-2026-83852 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Use after free in Windows Bind Filter Driver allows an authorized attacker to elevate privileges locally.
- Product
- Windows 11 Version 24H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows Partition Management Driver allows an unauthorized attacker to elevate privileges over a network.CVE-2026-83851 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Heap-based buffer overflow in Windows Partition Management Driver allows an unauthorized attacker to elevate privileges over a network.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.CVE-2026-83850 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds read in Windows Hello allows an authorized attacker to disclose information locally.CVE-2026-83849 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.5
Out-of-bounds read in Windows Hello allows an authorized attacker to disclose information locally.
- Product
- Windows 10 Version 21H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Untrusted pointer dereference in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.CVE-2026-83848 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Untrusted pointer dereference in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Microsoft Account allows an authorized attacker to elevate privileges locally.CVE-2026-83847 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Microsoft Account allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to elevate privileges locally.CVE-2026-83846 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Use after free in Connected Devices Platform Service (Cdpsvc) allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to perform spoofing locally.CVE-2026-83845 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.4
Improper privilege management in Windows Internet (wininet.dll) allows an authorized attacker to perform spoofing locally.
- Product
- Windows 10 Version 21H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds read in Windows Paint allows an unauthorized attacker to execute code over a network.CVE-2026-83844 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.1
Out-of-bounds read in Windows Paint allows an unauthorized attacker to execute code over a network.
- Product
- Microsoft Paint
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds read in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service over a network.CVE-2026-83843 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Out-of-bounds read in Windows Internet Key Exchange (IKE) Protocol allows an unauthorized attacker to deny service over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Double free in Windows TCP/IP allows an authorized attacker to elevate privileges locally.CVE-2026-83842 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Double free in Windows TCP/IP allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an authorized attacker to elevate privilegeCVE-2026-83841 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Concurrent execution using shared resource with improper synchronization ('race condition') in Windows Win32K allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Weak authentication in Windows Error Reporting allows an authorized attacker to elevate privileges locally.CVE-2026-83840 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Weak authentication in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Time-of-check time-of-use (toctou) race condition in Windows Hyper-V allows an authorized attacker to elevate privileges locally.CVE-2026-83839 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Time-of-check time-of-use (toctou) race condition in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Integer underflow (wrap or wraparound) in Windows Bluetooth A2DP driver allows an authorized attacker to elevate privileges over an adjacent network.CVE-2026-83838 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8
Integer underflow (wrap or wraparound) in Windows Bluetooth A2DP driver allows an authorized attacker to elevate privileges over an adjacent network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper access control in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.CVE-2026-83837 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Improper access control in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows Event Tracing allows an unauthorized attacker to execute code locally.CVE-2026-83836 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Windows Event Tracing allows an unauthorized attacker to execute code locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Buffer over-read in Windows Common Log File System Driver allows an authorized attacker to disclose information locally.CVE-2026-83835 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.5
Buffer over-read in Windows Common Log File System Driver allows an authorized attacker to disclose information locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.CVE-2026-83834 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.CVE-2026-83833 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Windows Kernel allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.CVE-2026-83832 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Out-of-bounds read in Windows Spaceport.sys allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.CVE-2026-83830 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Windows COM+ Event System Service allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.CVE-2026-83829 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Microsoft Windows Search Component allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.CVE-2026-83828 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Heap-based buffer overflow in Windows MIDI Service Module allows an authorized attacker to elevate privileges locally.
- Product
- Windows 11 Version 24H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows Bluetooth Port Driver allows an authorized attacker to elevate privileges locally.CVE-2026-83827 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7
Heap-based buffer overflow in Windows Bluetooth Port Driver allows an authorized attacker to elevate privileges locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Untrusted pointer dereference in Windows Error Reporting allows an authorized attacker to elevate privileges locally.CVE-2026-83826 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Untrusted pointer dereference in Windows Error Reporting allows an authorized attacker to elevate privileges locally.
- Product
- Windows 11 version 23H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Improper verification of cryptographic signature in Windows Update Stack allows an authorized attacker to perform spoofing locally.CVE-2026-83798 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comMedium 5.5
Improper verification of cryptographic signature in Windows Update Stack allows an authorized attacker to perform spoofing locally.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Out-of-bounds read in Windows Partition Management Driver allows an unauthorized attacker to execute code over a network.CVE-2026-83797 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 8.8
Out-of-bounds read in Windows Partition Management Driver allows an unauthorized attacker to execute code over a network.
- Product
- Windows 10 Version 1809
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.CVE-2026-83796 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.8
Use after free in Windows Kernel allows an authorized attacker to elevate privileges locally.
- Product
- Windows 11 version 23H2
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Oct 13, 2026Heap-based buffer overflow in Windows IKE Extension allows an unauthorized attacker to deny service over a network.CVE-2026-83795 · Computers, phones & browsers · Microsoft · reported by secure@microsoft.comHigh 7.5
Heap-based buffer overflow in Windows IKE Extension allows an unauthorized attacker to deny service over a network.
- Product
- Windows 10 Version 1607
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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